Harjani, Centaury, Dwi Aditiyarini, and Vinsa Cantya Prakasita. 2025. “COMPARATIVE PH ANALYSIS: HOMEMADE COLD CLAY VERSUS COMMERCIAL CLAY FOR CHILD SAFETY”. Jurnal Bioteknologi & Biosains Indonesia (JBBI) 12 (2). Indonesia:375-81. https://ejournal.brin.go.id/JBBI/article/view/13507.